Get a lungful (6)
I believe the answer is:
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">get a lungful</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for inhale that I've seen before include "Draw breath" , "Draw in air or smoke" , "Whiff" , "Breathe in (gas, smoke)" , "drag" .)